Judging from the recent article about the imitation of the enclosure of the tumulus of mound Kasta Cleopatra Moon, probably followed the same tactics of concealment of the true entry in Amphipolis!
The Kingdom of Ptolemy, probably knew the secrets related to the great tumulus of Amphipolis and applied the same strategy. So possibly the sign be located outside the precinct, in the land that surrounds the Tomb!
